In July 2015, 26 million people changed their profile pictures on Facebook by adding a rainbow filter to their existing image.

Plenty of my own friends were among those who did so.

Without reading a single status update or article about why they were all doing so, I was able to figure it out.

It was Pride here in London, of course. But over on the other side of the Atlantic, the US Supreme Court had just made a landmark ruling that would legalise gay marriage.

Two smart interns over at Facebook decided to find a way of allowing people to celebrate the occasion using an instantly-recognisable symbol of the LGBT community and of LGBT solidarity: the rainbow flag.

A deluge of rainbow-filtered updates ensued.

The original rainbow flag originated in San Francisco in the late Seventies. It is said to have been inspired by ‘Over the Rainbow’ – the song sung so longingly by Judy Garland in The Wizard of Oz. 

I’m sure the creators of the flag couldn’t have dreamed of a time when the flag would be flown by so many people around the world.

But somewhere over the rainbow…dreams really do come true.

Ellie Beecroft – Planner